美味牛肝菌多糖的抗氧化性

采用超氧阴离子自由基体系、羟基自由基体系,研究了美味牛肝菌多糖的抗氧化活性,并与Vc进行了比较。结果表明,美味牛肝菌多糖具有强的清除自由基能力,且随着浓度的增大其抗氧化作用亦增大。美味牛肝菌多糖浓度约为0.04mg/mL时,其清除.OH的能力与0.02mg/mLVc的能力相当;对浓度为0.1mg/mL的多糖溶液,其清除率达到71.78%。对于O2-.自由基,在浓度为0.04mg/mL时,抑制率达到79.34%。

Study on the Antioxidative Activity of Boletus edulis Bull Polysaccharide

The antioxidetive activity of Boletus edulis Bull polysaccharide was studied and compared with Vc by using the superoxide anion free radical system, hydroxyl radical system in this paper. The results showed that the Boletus edulis Bull polysaccharide can clear out the radicals effectively, and the function of antioxidetive become stronger with the increase of the polysaccharide concentration. When the concentration of boletus Eclulis Bull polysaccharide is about 0. 04 mg/mL, the ability of scavenging hydroxyl radical is close to 0. 02 mg/mL Vc, and the scavenging ability can reaches to 71.78% at the concentration of 0. 10mg/ mL. The ability of scavenging superoxide anion free radical is 79.34% when the concentration of Boletus edulis Bull polysaccharide is about 0.04 mg/mL.